Profile applicability: Level 1 - Master Node
Retain 10 or an appropriate number of old log files.
Kubernetes automatically rotates the log files. Retaining old log files ensures that
you would
have sufficient log data available for carrying out any investigation or correlation.
For
example, if you have set file size of 100 MB and the number of old log files to keep
as 10, you
would approximate have 1 GB of log data that you could potentially use for your analysis.
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NoteBy default, auditing is not enabled.
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Audit
Run the following command on the Control Plane node:
ps -ef | grep kube-apiserver
Verify that the
--audit-log-maxbackup argument is set to 10 or as
appropriate.Remediation
Edit the API server pod specification file
/etc/kubernetes/manifests/kube-apiserver.yaml on the Control Plane node and
set the --audit-log-maxbackup parameter to 10 or to an appropriate value.--audit-log-maxbackup=10